Flora of North America species comparison

bark smooth to vertically furrowed, shredding;

twigs with ferrugineous, multicellular, broad-rimmed, glandular-peltate scales.

bark smooth to vertically furrowed, shredding;

twigs glabrous or, very rarely, sparsely, widely scattered, unicellular and multicellular eglandular-hairy.

persistent;

petiole with ferruginous, broad-rimmed, glandular-peltate scales and unicellular-hairy;

blade narrowly elliptic to elliptic or oval, sometimes obovate, (1–)5–8(–13) × (1–)2–3.5(–5.5) cm, thick, coriaceous, margins entire, plane to conspicuously revolute, with scattered, glandular-peltate scales, apex acute or acuminate or obtuse to rounded, surfaces with scattered, ferruginous, broad-rimmed, glandular-peltate scales abaxially, (scales ± deciduous adaxially).

deciduous;

petiole glabrous or multicellular eglandular-hairy;

blade ovate to obovate, 3–8(–10.5) × 1.3–3.5 cm, thin, chartaceous, margins entire, plane, ciliate, eglandular-hairy, apex acute to obtuse, often mucronate, abaxial surface glabrous, (sometimes glaucous), adaxial surface glabrous, (lustrous).

5–10-flowered;

bracts similar to bud scales.

3–7-flowered;

bracts similar to bud scales.

5–15 mm, with ferruginous scales.

6–21 mm, glabrous or stipitate-glandular-hairy, sometimes also unicellular-hairy.

opening before or after development of leaves, erect to horizontal, fragrant;

calyx lobes 0.5–2 mm, with ferruginous scales;

corolla dark to very pale pink or white, upper lobe usually with greenish spots, campanulate to funnelform, 15–37 mm, with scattered, ferruginous, peltate scales on outer surface, petals connate (for 3/4+ their lengths), lobes 8–19 mm, tube gradually expanding into lobes, 8–22 mm;

stamens 10, included to slightly exserted, ± unequal, 13–26 mm.

opening after leaves, erect to horizontal, very fragrant;

calyx lobes 0.8–6(–9) mm, surfaces and margins scattered, stipitate-glandular- and/or, sometimes, eglandular-hairy;

corolla white or, sometimes, light pink (contrasting with dark pink to red style and filaments), without blotch on upper lobe, funnelform, 30–55 mm, stipitate-glandular-hairy (hairs continuing in lines up lobes), otherwise glabrous or sparsely unicellular-hairy on outer surface, petals connate, lobes 10–24 mm, tube ± gradually expanded into lobes, 20–37 mm (equaling or much longer than lobes);

stamens 5, much exserted, ± unequal, 44–82 mm.

borne on erect pedicels, 6–14 × 2.9–5 mm, with ferruginous, peltate scales.

borne on erect pedicels, 8–17 × 4.5–8 mm, ± densely multicellular stipitate-glandular-hairy, sometimes also sparsely unicellular-hairy.

with short, blunt/truncate tails at each end;

testa closely appressed.

without distinct tails;

testa not dorsiventrally flattened, usually ± loose.

bud scales ferruginous-lepidote, sometimes also unicellular-hairy abaxially, margins unicellular-ciliate.

bud scales usually glabrous abaxially, margins unicellular-ciliate.

= 26.

= 26.